Epson JED T440 user manual RS232 connections to NEC Plasma with D9, Sub 9 female, Solder side

NEC Plasma PX-42/50/60/61, VM/VP/VR/XM/XR, 2/3/4/5/6 (Code: 14hex)

This family has many members with a range of channel messages.

There is a typical RS232 code Operation Manual at: http://www.prokare.com.tr/pdf2/nec_residental_plasma_rs232.pdf

And http://www.nec-display-solutions.co.uk/c/g/uk/en/Service/Home/index.html

Channel codes are:

Computer1	:= DF + 80	+ 60	+ 47	+ 01	+ 07	+ 0E;	// RGB1 / PC1 DB15
Computer2	:= DF + 80	+ 60	+ 47	+ 01	+ 08	+ 0F;	// RGB2 / PC2 5 x BNC
Computer3	:= DF + 80	+ 60	+ 47	+ 01	+ 0C + 13;		// RGB3 / PC3 DVI-D

Video1	:= DF + 80 + 60		+ 47 + 01		+ 02 + 09;		// "Video2" RCA Composite Video
Video2	:= DF + 80 + 60		+ 47 + 01		+ 03	+ 0A;	// "Video3" S-VIDEO DIN-4
Video3	:= DF + 80 + 60		+ 47 + 01		+ 01	+ 08;	// "Video1" BNC
Video4	:= DF + 80	+ 60	+ 47	+ 01	+ 05	+ 0C;	// HD1 3 x RCA DTV1/Component
Video5	:= DF + 80	+ 60	+ 47	+ 01	+ 06	+ 0D;	// HD2 5 x BNC DTV2/Component or SCART1/2
Video6	:= DF + 80	+ 60	+ 47	+ 01	+ 0E + 15;		// HD3 DVI/HDMI (some only)
Video7	:= DF + 80	+ 60	+ 47	+ 01	+ 1A + 21;		// HD4 DVD/HDMI (some only)

Any one of these codes can be set into Constant:0/Constant:1 for computer codes and Constant:2/Constant:3 for video codes. (The default is to have Computer1 (above) as the “Computer” channel and Video1 as the “Video” channel. Setting OPT1 switch ON will swap Video1 and Video2 channels, making S-Video the video default.)

This panel can be used with a number of keyboards:

•With a “Code 9” keyboard, with buttons selecting “Video” and ‘Computer”, with “Volume” keys.

•With a “Code B-L” or “Code B-P” keyboard, with buttons selecting “Video” and “Computer1” and “Computer2” with “Volume” control keys. (Keyboards combine channel keys with “On” keys.)

•(There is no point in using a Code A keyboard, as there is no “Freeze” function on plasma screens.

Panel connection blink codes are available but OPT7 handshake mode in NOT.

Audio mute with 2 Vol keys is available, but not video.

RS232 connections to NEC Plasma with D9

These use a 9-pin-D9 male on the plasma, female on cable. Comms is at 9600 baud, 8 bits, Odd parity, 1 stop.

Function/Direction	T440 “projector”	“Serial” Port Connector
	Connection			1 2	3	4 5
Ground	Ground	9-pin D-sub pin 5		6	7 8	9
Data from T440 to projector	Tx	9-pin D-sub pin 2	(RXD)	D-sub 9 female
Reply data from projector to T440	Rx	9-pin D-sub pin 3	(TXD)
				solder side
Plus 9 volt CTS/DTR to projector	“RTS”	9-pin D-sub pin 8(CTS IN)

After installation wiring of any projector to a T440, use a multimeter to check voltages of –9 on BOTH TX and RX pins in any installation, as described in the troubleshooting part of this manual.

T440 Users manual V021/B, © JED Microprocessors Pty Ltd Nov 17th 2008 Page 14